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vocabulary
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Page Not Found

Typically, a page isn't found because an old link pointed to a page that no longer exists.

Over the years, we have eliminated pages that became obsolete due to a change in site structure. It's not always practical to redirect the old pages to the new. This happened most recently in 2023, and before that in 2019.

Another reason a page might not be found is that a web address may have been typed inexactly. For example, the address of this page includes "not-found.htm". If "Not-found" was typed with an upper case "N", the page would not be found.